Datasheet
Datasheet, Volume 1 109
Electrical Specifications
Notes:
1. Refer to the PCI Express Base Specification for more details.
2. Low impedance defined during signaling. Parameter is captured for 5.0 GHz by RLTX-DIFF.
3. COMP resistance must be provided on the system board with 1% resistors. COMP resistors are to V
CCIO
.
4. PEG_ICOMPO, PEG_ICOMPI, PEG_RCOMPO are the same resistor. Intel allows using 24.9 1% resistors.
5. DC impedance limits are needed to ensure Receiver detect.
6. The Rx DC Common Mode Impedance must be present when the Receiver terminations are first enabled to
ensure that the Receiver Detect occurs properly. Compensation of this impedance can start immediately
and the 15 Rx Common Mode Impedance (constrained by RLRX-CM to 50 ±20%) must be within the
specified range by the time Detect is entered.
Notes:
1. V
AUX-DIFFp-p
= 2*|V
AUXP
– V
AUXN
|. Refer to the VESA DisplayPort Standard specification for more details.
2. COMP resistance must be provided on the system board with 1% resistors. COMP resistors are to V
SS
.
3. eDP_ICOMPI, eDP_COMPIO are the same resistor.
Table 7-13. PCI Express* DC Specifications
Symbol Parameter Min Typ Max Units Notes
1
Z
TX-DIFF-DC
DC Differential Tx Impedance
(Gen 1 Only)
80 — 120 2
Z
TX-DIFF-DC
DC Differential Tx Impedance
(Gen 2 and Gen 3)
— — 120 2
Z
RX-DC
DC Common Mode Rx Impedance 40 — 60 3,4
Z
RX-DIFF-DC
DC Differential Rx Impedance
(Gen1 Only)
80 — 120
PEG_ICOMPO Comp Resistance 24.75 25 25.25 5, 6
PEG_ICOMPI Comp Resistance 24.75 25 25.25 5, 6
PEG_RCOMPO Comp Resistance 24.75 25 25.25 5, 6
Table 7-14. Embedded DisplayPort* DC Specifications
Symbol Parameter Min Typ Max Units Notes
eDP_HPD#
V
IL
Input Low Voltage -0.1 — 0.3 * V
CCIO
V
V
IH
Input High Voltage 0.7 * V
CCIO
—V
CCIO
V
eDP_AUX, eDP_AUX#
V
AUX-DIFFp-p
(Tx)
AUX Peak-to-Peak Voltage at
the transmitting device
0.4 — 0.6 V 1
V
AUX-DIFFp-p
(Rx)
AUX Peak-to-Peak Voltage at
the receiving device
0.32 — 1.36 V 1
eDP COMPs
eDP_ICOMPI Comp Resistance 24.75 25 25.25 2, 3
eDP_COMPIO Comp Resistance 24.75 25 25.25 2, 3